The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 15, 1990
Filed:
Jan. 25, 1988
William E Crisp, Phoenix, AZ (US);
Melvyn Engel, Scottsdale, AZ (US);
Richard C Kudlicki, Tempe, AZ (US);
Judson L Smith, Tempe, AZ (US);
Scientific Growth, Inc., Tempe, AZ (US);
Abstract
Method and apparatus for periodically cleaning washing apparatus in which washing liquid is intermittently circulated through a washing chamber adapted to contain the hand of a user. Cleaning is accomplished by intermittently circulating a cleaning liquid through the chamber while displaying a warning to potential users to not use the apparatus during the cleaning cycle. Cleaning is initiated (a) when the apparatus has been used for hand washing a predetermined number of times, (b) a predetermined period of time has elapsed since the last cleaning cycle, (c) the apparatus has been serviced, or (d) following interruption of the electrical power supply to the apparatus.